Wrench.



R. UMLAH.

WRENCH.

APPLICATION FILED OCT. 30. 1915.

Patented Jan. 18, 1916.

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specification of Letters Patent.

Patented Jan. 18, 1916.

Application filedOctober 30, 1915. Serial No. 58,879.

[0 all whom it may concern:

Be it known that I, RICHARD UMLAI-I, a citizen of the United States, residing at Turkey, in the county of Yavapai and State ofAriZona, have invented certain new and useful Improvementsin lVrenchesmf which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain new and useful improvements in wrenches and has for its'primary object to provide an improved wrench of the quick adjustable sliding type which is so constructed as to afiord great flexibility of action with a maximum of strength and durability and positive assurance against slipping of the wrench jaws upon the object.

The invention hasfor another and more particular object to provide a wrench of the locking adjustment of the yoke upon said shank, and means connecting the shank of the adjustable jaw to said yoke member for lateral relative movement with respect to The invention has for a further general object to improve and simplify the construction of wrenches of the above type and increase their serviceability and convenience in practical use but without materially increasing the manufacturing cost thereof.

With the above and other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts to be hereinafter more fully described, claimed and illustrated in the accompanying drawing, in which,

Figure 1 is a side elevation of a wrench constructed in accordance with the preferred embodiment of my invention; Fig. '2 is a section taken on the line 22 of Fig. 1; Fig. 3 is a section taken on the line 33 of Fig. 2; and Fig. 4 is a perspective view of one of the sliding lock, sections.

Referring in detail to the drawing, 5 indicates the main shankof the wrench, to one end of which'a suitable handle 6 is secured in any approved manner. Upon the other end of the shank '5, the fixed jaw 7 is formed having the gripping teeth 8' on its end face. This jaw is extended laterally from one edge of the shank in the form of rupted threads 13 are formed.

arectangular sleeve 9 to receive the longitu d nally shiftable shank 10 of an adjustable jaw 11 which is provided with a serrated or toothed face 12 opposed to the teeth 8 on the stationary jaw. Upon each of the longitudinal edges of. the main shank 5, inter- Upon the shank 5, a rectangular yoke member 14 is slidably mounted, the opposed side walls of this yoke member on opposite sides of the shank having rectangular openings indicated at 15, formed therein. The

yoke member 1 1 has laterally projecting, parallel arms 16 integrally formed with the side walls thereof at its outer end, and each of these arms is provided with an arcuate slot 17. In the inner end of the adjustable shank 10, a pin 18 is fixed, the ends of said pin being loosely engaged in the respective slots 17 for shifting movement. To the inner end of the shank 10, the angular end portion 20 of a leaf spring 19 is secured. A plate 21 is arranged over this angular end 20 of the spring, said spring and plate being provided with coinciding openings to receive suitable fastening screws, indicated at 22. The plate 21 is of greater width than the thickness of the shank 10 so that it will extend at its opposite edges upon the inner longitudinal edges of the arms 16 on the yoke member. This plate 21 is slightly curved to slide upon the correspondingly curved inner edges of the arms 16, in the lateral shifting movement of the shank 10 with respect to the main shank 5. The plate 21 hearing against said arms prevents longitudinal pull upon the spring 19. The main portion of this spring extends longitudinally upon one side of the yoke member 14: and is securely fixed to said yoke at its extremity by means of a screw, indicated at 23.

24ldesignates the lock nut which is arranged upon the main shank 5 within the openings 15 of the yoke member. This lock nut is of cylindrical form and is provided with an internal interrupted thread 25 afspective oppositesides of the shank 5. The r outer convex faces of these look members are Y threaded, as at 28, for engagement by the re- Q f I 1 1,168,835

spective sections of the interrupted thread nected thereto, may then be shifted longi tudinally with respect to the shank 5 so that j the adjustable jaw 11 can be properly spaced from the fixed jaw 7 in order that said j aws may be engaged upon opposite sidesv of the pipe. In this adjustment, the members 27 having the flat inner faces contacting with the sides of the shank 5, will slide freely upon said shank. It will be understood that thebore of the rectangular sleeve 9 is suffic1ently large. to permit of a lateral shifting movement of the shank 10. therein so that when strain is applied to the adjustable jaw 11, the inner end of the shank 10 will move outwardly between the arms 16 of the yoke; member 14: against the action of the spring 19 so that saidspringwill be placed under tension. Thus, the jaw 11 will maintain its position in gripping engagement uponthe',

pipe and will not shift orturn thereon. As before stated, the spring 19 is relieved of undue strain by the bearing engagement of the plate 21 upon the edges of the yoke arms 16.

In this manner, it will be understood that the wrench may bevery easily and quickly adjusted andproperly applied to or removed from pipes of various diameters.

With obvious mechanical modifications, the wrench may also be'constructe'ol for use as a nut wrench.

The invention as a whole consists of comparativelyfew elements which are all of exceedingly simple construction so that the wrench may be manufactured at relatively small cost. Manifestly, the device iscalso very strong and durable in practical use.

, While I have shown and described the preferred construction and arrangement of the several parts, it is to be understood that the device is susceptible of considerable modification. therein and I, therefore, reserve I the privilege of adopting all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed. 5

Having thus fully described my invention, what I desire to. claim and secure by Letters Patent is laterally projecting guide, sleeve, an adjust-- able jaw opposed to the fixed jaw and having a shank slidable in said sleeve, a yoke member longitudinally shiftable upon the main shank, means operatively connecting the inner end of the slidable shank to said yoke member for lateral shifting'movement with respect thereto, a spring fixed at one end to the end of said adjustable shank and at its other end to the yoke member to yieldingly urge the adjustable shank toward the fixed shank, and means for locking the yoke member in its adjusted position upon the main shank. j

' 2. In a wrench, the combination of a main shank, having a fixed aw and a guide sleeve projecting laterally therefrom, an adjustable jaw having a shankslidablethrough,

said sleeve, a yoke memberslidable upon the main shank, a slot and pin connection between the inner end of the adjustable shank and said yoke member permitting of fixed at one endto saidf yoke memberand extending longitudinally thereof, the other end of the spring beingangularlyextended l lateral movement ,of the adjustable shank with respect to the main shank, a spring and fixed to the end of the adjustable shank,

to normally urge said shank toward the main shank,and means for lockingtheyoke member in an adjusted position upon the main shank.

In a wrench, the combination of amain shank having a fixed jaw and a guide sleeve projecting laterally there'from,-an adjustable jaw having a shank slidable through [said sleeve, a yoke member slidable upon the main shank, a slot and .pinv connection be-.

tween the inner end'of the adjustable shank, and said yoke member permitting of lateral movement of the adjustable shank. with respect to the main shank, a spring fixed at one end to said yoke member and extending longitudinally thereof, the other end of the spring being angularly extended and fixed to the end of the adjustable shank to normally urgesaid shank toward'the main shank, andqa-thrust bearing plate secured to the end of the adjustable shank over the ends of said spring-and slidablyengaged upon the yoke member, and meansfor lock ing. said yoke memberinanadjusted position upon the main shank.

1. In a wrench, the combination of a main shank having a fixed jaw on one end and a gulde sleeve pro ect ng laterally therefrom,

an adjustable jaw, having a shank slidable through said sleeve, a yoke member slidable on the main shank and provided on one end with laterally projecting parallel arms, a pin and slot connection between the inner end of the adjustable shank and the arms of said ,yoke member permitting of lateral shifting movement of the adjustable shank with'respect to the main shank, a leaf spring fixed at one end to the inner side of the yoke member and extending longitudinally thereof, the other end of said sprin being angularly extended; and fixed to the end of the adjustable shank, a thrust hearing plate also In testimony whereof hereunto aifix my secured to the end of the adjustable shank signature in the presence of two Witnesses. over the end of said spring and having sliding bearing engagement upon the arms of RICHARD UMLAH' the yoke member, and means for locking the Witnesses:

yoke member in its adjusted position upon ELMER R. SMITH,

the main shank. JAMES P. CLEATOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

